Jordan Dam
Key Takeaway
Jordan Dam is classified as high hazard in Montana. It was completed in 1961 and is 65 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 38 ft (taller than 94.3% in MT) |
| Dam Length | 650 ft |
| Dam Type | Earth |
| Max Storage | 1.3K acre-ft |
| Normal Storage | 640 acre-ft |
| Surface Area | 87 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 11,140 cfs |
| Year Completed | 1961 (65 years old) |
| NID ID | MT00334 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
ARTHUN BROS.
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Jordan Dam?
Jordan Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Jordan Dam?
Jordan Dam is owned by ARTHUN BROS. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Jordan Dam built?
Jordan Dam was completed in 1961, making it 65 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Jordan Dam?
Jordan Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Jordan Dam?
Jordan Dam has a dam height of 38 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.